Someone has done the dirty on Don Chipp and Crikey's independent Melbourne City Council correspondent Terry Maher is keen to find out whether it was someone from the P1 or P2 camps.

With three weeks to go, the mayoral election is still between P1 (Peter McMullin) and P2 (Peter Sheppard) on the inside rail with either John So or Don Chipp still an outside chance to come up on the outside rail and pip them at the post. The P1, P2 and Chipp camps are all claiming 20 per cent plus of the primary vote.